Air Filter is the core of the air conditioning and purification system, the Air Filter on the air to form resistance, with the Air Filter dust increases, the Air Filter resistance will increase. When the Air Filter dust is too much, the resistance is too high, the Air Filter will be reduced by the air flow, or the Air Filter is partially penetrated, so when the Air Filter resistance increases to a certain value, the Air Filter will be scrapped. Therefore, the use of Air Filters, to grasp the appropriate use of the cycle. In the case of no damage to the Air Filter, the general resistance to determine the service life.
The life of the Air Filter depends on its own advantages and disadvantages, such as: Air Filter material, Air Filter area, structural design, initial resistance, etc., but also with the dust concentration in the air, the actual use of air volume, the final resistance set and other factors The
To understand the appropriate use of the cycle, we must understand the changes in its resistance, we must first understand the following definition:
1. Rated initial resistance: The initial resistance provided by the Air Filter sample, the Air Filter characteristic curve, or the Air Filter test report at rated air flow.
2. Design the initial resistance: the system design air flow, the Air Filter resistance (should be provided by the air conditioning system designer).
3. Run the initial resistance: the beginning of the system, the Air Filter resistance, if there is no measurement of the pressure of the instrument, you can only take the design of the air flow resistance as the initial resistance (the actual operation of the air volume can not be completely equal to the design air volume);
Air Filter layer to capture the role of particles are mainly 5 kinds
1. Interception effect: When a particle size of particles moving to the vicinity of the fiber surface, the center line to the fiber surface distance is less than the particle radius, dust particles will be blocked by the Air Filter fiber and deposited.
2. Inertial effect: When the mass of particles is large or the speed is large, due to inertia and collision in the fiber surface and deposited.
3. Diffusion effect: small particle size particles Brown strong and easy to collision to the fiber surface.
4. Gravity effect: particles through the fiber layer, due to gravity deposition and deposition on the fiber.
5. Electrostatic effect: fibers or particles may be charged, resulting in electrostatic effects to attract particles, and particles will be absorbed on the fiber surface.
Air filtration technology is mainly used Air Filter separation method
1. By setting the performance of the Air Filter, remove the dust in the air particles and micro-organisms, that is, through the Air Filter material will be trapped dust particles trapped down to ensure that the amount of air into the cleanliness requirements. It uses the Air Filter for the smaller diameter of the fiber, both to smooth the air flow, but also can effectively capture dust particles.
2. Clean technology control Filtration of dust is generally 0.1 --- 10μm dust particles, particle size is small, contains solid particles and liquid particles; suspended organic particles in the atmosphere of microorganisms, plant pollen, tidbits and villi, microbes Generally include viruses, rickettsia, bacteria, fungi, protozoa and algae. Air purification control is mainly bacteria and fungi, viruses. Because the microorganisms are mainly attached to the dust particles, so the dust particles in the air effectively control, it can effectively control the air bacteria, bacteria and viruses. To do this, it must be Air Filtered by blocking the nature of the particulate Air Filter. In general, the general high efficiency Air Filter on the bacteria filtration efficiency of up to 99.996%, basically can meet the biological clean room filtration purification requirements.